When the various layers are removed, cuts should extend only partially. Optical cable is a high capacity transport medium that is sensitive to excessive pulling force, tight bends, and crushing forces, therefore, proper care must be taken during the installation procedure. Cable installation manual for power and general cable. The three most common methods of cable placement are direct buried, cable in conduit, and a total conduit system. Cable pulling and manufacturing involves many risks. Underground installation of optic fiber cable placing. It comes in a few different forms and reduces the coefficient of friction between wires and conduits to help minimize damage to. Inspect bolted electrical connections for high resistance using one of the following methods. Safe work procedure for cable pulling on october 30, 2017 by kevin johnson home and garden. Rope is a very critical link in the cable pulling system. Cable preparation and pulling procedure best practices for. Underground cable installation manual western power. The greenlee ultra tugger 5 cable puller is intended to be used to pull cable through conduit and in tray.
The pulling cable has a great impact on the selection of the schedule of the conduit. The purpose of this method is to describe the measures and ways of proper installation of low voltage cables and wires in this project. A guideline for laying of cables and installation of sleeves. In preparing for a cable pull, it is just as important to cover the small details as it is to assure that the cable does not exceed maximum sidewall pressure. The combination of the rope eye knot and proper cable grip device, along with an approved and rated shackle, make for a. Table 2 optimal values of diameter and area ratio for cable pulling and cable blowing applications for standard osp cable application diameter ratio area ratio cable pulling optical fiber cable issued august 20.
Cable shall meet the requirements of the following industry standards. Method statement for laying of low voltage cables and wires. For cable tray installersthis publication is intended as a practical guide for the proper installation of cable tray systems. Running individual wires through a conduit can be quite a task if the conduit run is long or has several bends in it. Electrical cables may be installed to an electrical pvc conduit either manually or with the assistance of a pulling mechanism e. If possible, utilize twoway communication at both ends of the run, particularly on long runs. For example, when removing cable insulation, the installer. Also maximum bending radii indicated by the manufacturers must not be exci ded. The main function of breakaway swivel is to break the swivel device if excess tension applied. Personnel involved in optical fiber cable installation must be aware of all the applicable. The sand bed protects the cable from the moisture from the ground.
When the various layers are removed, cuts should extend only partially through the layer. A complete termination normally consists of a gland and a seal assembly and, where plastic covered cable is used, a gland shroud. Pulling tension must be in accordance with the type of cable and the instructions of the manufacturer must be followed. All cables and ducts laid into cable trrench should be overprotected by a cable protection cover or tape depending upon the highest voltage cable to be protected within the cable duct typically in the uk the following cable protection tapes and covers are used for lv, mv and hv cables. The installation company responsible for laying the cables must heed the. For telecommunications cables we recommend conductor pulling with a cable pulling head. Central waterfront project transmission line relocation.
For example, if cable rated tensile is 2700n and breakaway swivel having. The pulling equipment specified for a job should be capable of twice the calculated pulling tension. Underground installation of optical fiber cable by pulling. Ieee 3752 test procedure kinetic coefficient of friction tested at 300 lbft sidewall bearing pressure. An aerial cable is an insulated cable usually containing all fibres required for a telecommunication line. Mediumhigh voltage cable preparation it is necessary to begin with a good cable end. Cable tray systems design shall comply with nec article 392, nema ve 1, and nema fg 1 and follow safe work practices as described in nfpa 70e. The differences in capacities from pulling to lifting is due. Some cable designs may require special drum handling and installation procedures. Cable pullers pullinglifting models these three tuflugger lite models 4400, 4500, 4600 are designed for both pulling and lifting applications.
For this reason, it is common practice to cut off a portion of cable after pulling to assure an undamaged end. There are various hazards associated to this field. Before pulling cable directly from a figure8 configuration, make sure that the area inside the loop of. Cable ends must always be sealed to prevent the entrance of moisture, etc. Inspect exposed sections of cables for physical damage. Cable and drum schedule cable and drum schedule adalah dokumen berisi tabel penomoran kabel, jumlah tarikan kabel, dan tujuan dari dan ke mana kabel akan ditarik sehingga tidak terjadi salah.
No wires will be drawn through unless conduit and trunking installations have been completed and inspected and cleaned. Using the wrong type of rope, using rope with the wrong breaking strength, or using damaged rope can result in the rope breaking during a cable pull. Cable pulling rope safety rope is a very critical link in the cable pulling system. Direct in the ground in trenches underground cables. Where single core pvc insulated wires are enclosed within the conduit and trunking, care will be taken that no damage will occur to the wires during their installation. Then the trench is covered with a 10 cm thick layer of fine sand. Some of the important parameters that need special attention during cable pulling installation are. Saw the cable to produce a square end procedure this leaflet shows the procedure for fitting a complete termination on an aei mineral insulated cable. Works shall be carried out in compliance with the drawings, project specifications, and materials. Apply pulling lubricant compound liberally during the installation. Wiring will only be carried out after the conduit installations and plaster work is completed. Wirepulling compound, also called cable lube or lubricant, is designed to make it easier to pull electrical wires and cables through conduit runs. There are two basic methods of cable installation in a preinstalled duct pulling method and blowing method.
This is recommended due to the following variables. Cable pulling, lifting transformers electrical boxes, moving equipment are the primary applications. The problem with installation and manufacturing is that people often pursue the shortcuts to obtain the result. A key to good cable preparation is the use of sharp, high quality tools. Safe work procedure for cable pulling the quest for the self. The winch or capstan must be designed so that it is capable of maintaining tension on the cablepulling line when not taking up cable. The purpose of work procedure for cable pulling generating this method statement is to define the procedure step by step to implement the correct practice for laying the cable from substation to the location of newly assigned area. Pulling cable procedure disiapkan oleh subcontractor dengan berkoordinasi dengan kontraktor mengacu pada project specification dan data engineering c. This release of energy can cause injuries and damage. This publication provides information of value for the laying and. See a greenlee catalog for sheaves, pulling rope, and other cable pulling accessories to create an entire cable pulling system.
Swivel cable pulling grip cable handling all optical fiber cables are sensitive to damage during shipping, handling, and installation. Avoid letting the cable stop part way through the pull. Central waterfront project transmission line relocation cable pulling calculations prepared for city of seattle, washington. The fastening of the pulling rope to the cable must be undertaken with care to avoid losing the cable on the way. Before pulling cable directly from the figure 8 shape, make sure that the area. Safe work method statement pulling of cables through conduits.
Underground installation of optical fiber cable by pulling sterlite. The swivel must have a 600 pound breakaway pinto prevent pulling damage to the cable. A pvc electrical conduit is a piping system used for the protection and routing of electrical cables to given articles or items of electrical equipment. Cable preparation and pulling procedure best practices. Conduct a thorough site survey prior to cable placement. Scope of this method statement covers the following activities. Compare cable data with drawings and specifications.
975 966 696 922 579 327 1078 1217 742 386 1129 1474 1261 48 755 101 1048 1226 1436 1471 264 784 741 1187 345 1510 1333 1368 162 1460 1408 787 1456 1414 1474 457 281 366 348 716 907 682 882 317 79 1439